Brain mini-series is Drive Saga, not Rider Time, so I doubt it will be Zi-O related.

Well, toys need to be sold. It's not csm, so I doubt people buy drive add on since they're no rerelease drive driver like decade with update. I want to say drive ride watch might be tie in because with movie, new forms, etc we can't do 2 eps tributes. Also, more cast will return if they have more lines and development in brain. They're doing continiuty instead of retcon now like with recent arcs.